柯林斯詞典efficiency /??f???ns?/ 1. N-UNCOUNT Efficiency is the quality of being able to do a task successfully, without wasting time or energy. 效率 There are many ways to increase agricultural efficiency in the poorer areas of the world. 有許多提高世界較貧困地區(qū)農(nóng)業(yè)效能的方法。 返回 efficiency劍橋詞典the good use of time and energy in a way that does not waste any 效率；效能；功效 What is so impressive about their society is the efficiency of the public services . 他們的社會給人留下最深刻印象的是其高效率的公共服務(wù)。 energy efficiency 能源使用效率 physics specialized the difference between the amount of energy that is put into a machine in the form of fuel , effort , etc. and the amount that comes out of it in the form of movement （機器的）功率 例句 She got through her work with speed and efficiency.Streamlining cars increases their fuel efficiency.Ships from eight navies will be taking part in an exercise in the Pacific to improve their efficiency in combat .He's a stickler for efficiency.Sweden has shown the way forward on energy efficiency. 返回 efficiency